diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c932a65..e7b37be 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,8 +10,13 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.6", "3.11"]
+        include:
+        - {os: ubuntu-latest, python-version: "3.7"}
+        - {os: ubuntu-latest, python-version: "3.11"}
+        - {os: macos-latest, python-version: "3.9"}
+        - {os: macos-latest, python-version: "3.11"}
+        - {os: windows-latest, python-version: "3.6"}
+        - {os: windows-latest, python-version: "3.11"}
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps: